7481980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{479}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 17418240

約数和(自身を除く): 9936260

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 479, 710, 781, 958, 1420, 1562, 1916, 2395, 3124, 3905, 4790, 5269, 7810, 9580, 10538, 15620, 21076, 26345, 34009, 52690, 68018, 105380, 136036, 170045, 340090, 374099, 680180, 748198, 1496396, 1870495, 3740990, 7481980]

約数ペア:

[(1, 7481980), (2, 3740990), (4, 1870495), (5, 1496396), (10, 748198), (11, 680180), (20, 374099), (22, 340090), (44, 170045), (55, 136036), (71, 105380), (110, 68018), (142, 52690), (220, 34009), (284, 26345), (355, 21076), (479, 15620), (710, 10538), (781, 9580), (958, 7810), (1420, 5269), (1562, 4790), (1916, 3905), (2395, 3124)]